Planeness error evaluation method and device
A technology for error evaluation and flatness, which is applied in the field of flatness error evaluation methods and devices, and can solve problems such as complex mathematical models, low calculation efficiency, and limited applications
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[0066] As another preferred embodiment, the method further includes:
[0067] When the minimum area condition is not satisfied, the rotation angle is changed, and steps S2 to S7 are repeated.
[0068] As another preferred implementation manner, the initialization of the rotation angle and the current best flatness error in the step S1 includes:
[0069] Measure and obtain the measured point set P of the part plane in the rectangular coordinate system O-XYZ of the measurement space, and denote the coordinate of the i-th point in the point set P as P i (x i ,y i ,z i ), and establish a rotation plane S through the z axis, the plane S is rotated around the z axis with θ as the rotation angle, and θ 0 As the iterative initial value of the rotation angle, and make the current best flatness error f best Is 0;
[0070] Wherein, the coordinate system O-XYZ includes x-axis, y-axis and z-axis, i=1, 2, ..., n, n is the number of measured points, and n is a positive integer greater than or equal t...
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